Reddel, Helen K., Taylor, D. Robin, de Jongste, Johan C., Kerstjens, Huib A. M., Lazarus, Stephen C., Levy, Mark L., O'Byrne, Paul M., Partridge, Martyn R., Pavord, Ian D., Sears, Malcolm R., Sterk, Peter J., Stoloff, Stuart W., Bateman, Eric D., Boulet, Louis-Philippe, Boushey, Homer A., Busse, William W., Casale, Thomas B., Chanez, Pascal, Enright, Paul L., Gibson, Peter G.. American Thoracic Society; 2009. An official American Thoracic Society/European Respiratory Society statement: asthma control and exacerbations standardising endpoints for clinical asthma trials and clinical practice.

Kum, Elena, Guyatt, Gordon H., Dupont, Lieven, Field, Stephen K., French, Cynthia L., Gibson, Peter G., Irwin, Richard S., Marsden, Paul, McGarvey, Lorcan, Smith, Jaclyn A., Song, Woo-Jung, O'Byrne, Paul M., Munoz, Caroline, Satia, Imran, Beaudin, Suzanne, Li, Shelly-Anne, Abdulqawi, Rayid, Badri, Huda, Boulet, Louis-Philippe, Chen, Ruchong, Dicpinigaitis, Peter. European Respiratory Society; 2022. Assessing cough symptom severity in refractory or unexplained chronic cough: findings from patient focus groups and an international expert panel.